His coin toss example simply shows that how you arrive at the "truth" - the correct number - depends on the ground rules for the search.
That is correct. But don't forget to include your starting assumptions. Such as whether "God" exists and takes an active part. Or whether there is a secret cabal that controls the governments and banks. Or whether there is an objective "Truth" that can be found.

Suppose there are 6 Billion people on the planet. You're looking for the "Truth" about people.

Person #1 comes up with the "Truth" that has 5,999,999,999 different special cases.

Person #2 believes there is no "Truth".

Who is correct?

Which was one of my reasons for asking Marlowe to provide the "Truth" that he's found. You starting assumptions will determine at what point you claim to have found "The Truth".

Well, that would be true EXCEPT where there was a demonstratable, objective "Truth". Note the use of the word "objective". Like gravity is "objective".